I like the sentiment. I too think that anyone who has an entrepreneurial spark should give it a go (with proper preparation of course.) It also seems folly that if someone isn't predisposed to certain attributes, they shouldn't attempt the launch.

However, if you're going to throw down a gauntlet with a linkbait title like that, don't wuss out like this: "Okay, maybe I should say “I disagree” with Mark on this issue"